Wausau Cty Wastewater Treatment Plt
Wausau, WI · Marathon County · Publicly Owned Treatment Works
- Average flow
- 4.39 MGD
- Design flow
- 9.2 MGD
- NPDES permit
- WI0025739
- Expired
- Permit expires
- December 2023
- Population served
- 42,857
- CWNS 2022
Wausau Cty Wastewater Treatment Plt is a publicly owned wastewater treatment works in Wausau, Marathon County, Wisconsin treating an average of 4.39 million gallons per day against a permitted design capacity of 9.2 MGD, serving about 42,857 residents. Treatment on site includes clarifiers, biogas silos, biogas balloons. It discharges under NPDES permit WI0025739 (expired), which expires in December 2023, with 0 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Compliance snapshot (last 3 years)
- Total violations
- 0
- Effluent violations
- 0
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
2 verified contacts for Wausau Cty Wastewater Treatment Plt, with validated emails and direct phone numbers.
Unlock 2 verified contacts
Names, validated emails and direct phone numbers for decision-makers at Wausau Cty Wastewater Treatment Plt, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Wisconsin
Brokaw · 6 mi away
0.02 MGD
Wausau · 6 mi away
2.94 MGD
Merrill · 16 mi away
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Edgar · 16 mi away
0.09 MGD
Fenwood · 20 mi away
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Birnamwood · 21 mi away
0.07 MGD
Athens · 22 mi away
0.1 MGD
Stratford · 24 mi away
0.1 MGD
Wausau Cty Wastewater Treatment Plt: frequently asked questions
Sources and methodology
Flow, permit and violation figures come from the EPA's ICIS-NPDES discharge monitoring records. Population served comes from the Clean Watersheds Needs Survey 2022. Treatment structures are identified by Klarifi's review of aerial imagery, and capital improvement projects are extracted from published municipal budget documents. Violations are counted over the last three years of monitoring reports.
Data refreshed September 11, 2026; facility record last updated March 5, 2025.